1178503426779 has 64 divisors (see below), whose sum is σ = 2000472671232. Its totient is φ = 601645363200.

The previous prime is 1178503426757. The next prime is 1178503426783. The reversal of 1178503426779 is 9776243058711.

It is not a de Polignac number, because 1178503426779 - 2⁵ = 1178503426747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1178503427779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 546477 + ... + 1629614.

It is an arithmetic number, because the mean of its divisors is an integer number (31257385488).

It is a 1-persistent number, because it is pandigital, but 2⋅1178503426779 = 2357006853558 is not.

Almost surely, 2^{1178503426779} is an apocalyptic number.

1178503426779 is a deficient number, since it is larger than the sum of its proper divisors (821969244453).

1178503426779 is a wasteful number, since it uses less digits than its factorization.

1178503426779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176196.

The product of its (nonzero) digits is 17781120, while the sum is 60.

The spelling of 1178503426779 in words is "one trillion, one hundred seventy-eight billion, five hundred three million, four hundred twenty-six thousand, seven hundred seventy-nine".